Re: [patch 21/21] slab defrag: Obsolete SLAB

Pekka Enberg
2008-05-12T07:55:01Z

On Mon, May 12, 2008 at 10:38 AM, KOSAKI Motohiro
<kosaki.motohiro@jp.fujitsu.com> wrote:
> > > What about the TPC performance regressions? My understanding was that
> > > slub still performed worse in the "object allocated on one CPU, freed on
> > > the other CPU" type workloads due to less batching.
> >
> > Which can be the majority of object allocations and frees in some
> > workloads. It definately wants fixing.
>
> Agreed, that situation is very frequency happend, IMHO.

Christoph fixed a tbench regression that was in the same ballpark as
the TPC regression reported by Matthew which is why we've asked the
Intel folks to re-test. But yeah, we're working on it.